Hi Rich, Pete’s got it right. The superheater goes into the firebox. Supposedly you get more heat, superheaters etc. You wouldn’t try this with copper as you would likely melt it when you have the regulator closed. My copper ones were in flue, done lots of work & got eroded thru, buggers up a nice days steaming!We had a discussion here awhile back re superheating, my thoughts being that we get drier steam hence more volume, better work etc, but as to superheating we don’t dry the steam prior to superheating as in full size practice hence little or no superheating as a result. You do get better performance.

Hi Rich, Had mine TIG'd into the block, plus the plug of the cross drilled hole. Mate did a lovely job!

Wish I had thought of , seen an article on, using a copper sleeve to join to copper tube. Getting the stainless to line up & silver soldered into the brass header fitting was a pain. Second header fitting had to be made as the first one got a bit hot!

I also need to make and fit the brake gear to make sure everthing misses each other. Starting with the 4 brake hangers. I drilled the 3 holes in each one using the DRO. Then bolted together and mounted on a sacrificial ally table the ends are machined. They fit inside the frames and for the most part can't be seen so I am not going to bother with the cosmetic shaping.

The brake hanger pins I have made from stainless steel and used M4 for the threads as I have some stainless steel M4 nyloc nuts. Similarly i have not bothered to shape them as they can't be seen

The brake shoes next. I drew out the size of the ring I would need

Then a rare flash of inspiration, I remembered I had some large washers, just got to find them